Rog .... indeed that's good advice .... though the large areas of an aluminium panel with small stainless fastners should be less vulnerable ..... plenty of waxoil etc will help.
If you're fitting aliminium strips to aluminium panels then aluminium fastners are available from bolt factors or race part suppliers .... undoubtedly the best solution is to use the same metal throughout ...... and as they're not in a structural situation ali bolts will be fine.
K
